Fuel consumption

Submitted: Friday, Nov 09, 2001 at 01:00
ThreadID: 531 Views:1943 Replies:5 FollowUps:4
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This may be a hot topic asked over & over again, but it seems that my 4WD has become a guzzler, and I was wondering if anyone else had the same issue. It is an auto petrol Prado, 1996, 3400 cc.
It seemed OK at first, but lately I noticed I was filling up more often. I checked it, and it seems I'm getting only 6.5km per litre (or 15.3L per 100km) - seems a bit high, ay. Any others getting better or worse? Maybe there's something I can do? (apart from sell it!)
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Reply By: Porl - Friday, Nov 09, 2001 at 01:00

Friday, Nov 09, 2001 at 01:00
I have a 2000 petrol manual 3.4L Prado. If I only drive it around town, and use the accelerator liberally to pull away from traffic and have fun by keeping the tacho up in the 3,000 to 5,000 rev range, then i will get about 15L per 100Km and that is very normal. Likewise if i sit on the highway and sit on around 120Km/hr to 140Km.hr - (at these speeds the poor aerodynamics of 4WD's rudely affects fuel consumption. ) If I sit on 80 - 90 Km/Hr on the highway with no stops or starts and not very loaded up then I can get about 10.5L per 100Km. If I try and drive frugally in town and sitting on speed limits on the highway then I average about 12L -13.7L per 100Km. Also, roof racks can noticably increase fuel consumption as well as spirited driving. Also, autos always use more petrol because you don't get the choice to work the engine harder at lower revs to reduce fuel consumption.

The rate you have quoted is the normal top end for wagons such as pajeros and prados and jackeroos, though if you spend much time in high or low range spinning the wheels through sand and mud then expect for that period up around the 20L per 100Km mark.

This is why many people prefer diesels.

Hope that helps.
AnswerID: 1369

Follow Up By: George - Friday, Nov 09, 2001 at 01:00

Friday, Nov 09, 2001 at 01:00
Absolutely. I get the same figures you quote from my Pajero. One of the reasons I'm going diesel next.
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Reply By: Peter - Friday, Nov 09, 2001 at 01:00

Friday, Nov 09, 2001 at 01:00
I have just traded my 98 World Cup Prado which was the V6 petrol with auto transmission on a LandCruiser 100 series petrol. The fuel consumption you are getting is about normal (average). To improve fuel economy I recommend only using genuine Toyota air filters and keep them clean, clean and adjust spark plugs regularly, check tyre pressure regularly (I used to run 48psi (front) and 43psi (rear) without a load), do not fit a snorkel (unless you already have one), and I found a small improvement by using synthetic oil in the driveline (Castrol SAF/XA in the diffs and transfere case). With all of the above I could drive in a normal manner, meaning not having to sneak around everywhere or revving the ring out of the engine, and was returning around 12l/100km. Hope this helps.
AnswerID: 1377

Follow Up By: Norm - Tuesday, Dec 04, 2001 at 01:00

Tuesday, Dec 04, 2001 at 01:00
I noticed that you mentioned not to fit a snorkel in your reply. As i have a similar vehicle and was thinking about fitting a safari snorkel this has me a little concerned as to why.
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Follow Up By: Peter Gordon - Wednesday, Dec 05, 2001 at 01:00

Wednesday, Dec 05, 2001 at 01:00
Norm, I based my comments on actual figures and comments from a question I asked on the forum on 19 March 2001. You can read these for yourself if you lookup this date using the search function.

A mate of mine with a similar Prado didn't agree with me and fitted a Safari snorkel to his vehicle. He found he actually had more power on the road (real or perceived I'm not sure, I couldn't tell the difference), however he definately had a lot more induction noise (right outside the drivers window) and after about 3 months he started complaining about using more fuel. When I had a look at it, the air cleaner was filthy rotten dirty after only about three thousand kilometres (none of them off sealed roads). I washed and cleaned the filter (genuine Toyota) and his fuel economy returned again, but now he cleans the filter ever 1-2,000km.

So I believe unless you are going into deep water regularly they can be more of a hindrance than a help. I hope this helps. If you want any more information please email me again. Cheers.
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Reply By: Graham - Monday, Nov 12, 2001 at 01:00

Monday, Nov 12, 2001 at 01:00
My 99 Petrol Prado returns 13.8l/100km on the highway sticking to the speed limit.
I have a 00 3.0l turbo diesel hilux work truck that returns a miserable 13.6l/100km tops, maybe someone has a comment whether this is par for the course.
AnswerID: 1405

Reply By: Viki - Friday, Nov 23, 2001 at 01:00

Friday, Nov 23, 2001 at 01:00
I have a Pathfinder Ti (99 model) and was pretty disappointed with its consumption. I'm preparing it for a 10 month trek next year so was willing to invest in ways to improve consumption. I've had a Hiclone installed and am pretty amazed at the results. Improved power, and consumption has gone from around 17l per 100k, to 10l per 100 on a recent highway trip, not towing and sitting on 100k or just under. Have yet to test it towing the camper trailer, but for $160, I reckon it's going to pay for itself many times over next year!! PS I'm not on commission:-)))))!!
AnswerID: 1474

Reply By: Viki - Friday, Nov 23, 2001 at 01:00

Friday, Nov 23, 2001 at 01:00
I have a Pathfinder Ti (99 model) and was pretty disappointed with its consumption. I'm preparing it for a 10 month trek next year so was willing to invest in ways to improve consumption. I've had a Hiclone installed and am pretty amazed at the results. Improved power, and consumption has gone from around 17l per 100k, to 10l per 100 on a recent highway trip, not towing and sitting on 100k or just under. Have yet to test it towing the camper trailer, but for $160, I reckon it's going to pay for itself many times over next year!! PS I'm not on commission:-)))))!!
AnswerID: 1475

Follow Up By: Patrick - Friday, Nov 23, 2001 at 01:00

Friday, Nov 23, 2001 at 01:00
Hi Viki - I also have a TI Pathfinder (2000) and have looked at installing a Hiclone but have not heard a good word on these from anayone. You mention the improvement in consumption on highway conditions but not the City cycle. I acheive around 11.25 lites per hundred on trips and 16-18 around town. I would be interested to know what your pre and post Hiclone consumption figures.
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